Annealing-box.



No. 682,459. Patented sept. lo. tetu.

A. J. DEMMLER.

ANNEALING BOX.

(Application led Aug. 4, 1900.)

(No Model.)

ft di --.il It tg VMMMM UNITED STATESk PATENT Omron.

ALBERT J. DEMMLER, OF WELLSVILLE, OHIO.

ANNEALlNG-BOX.

SPECIFICATION forming part of- Letters Patent No. 682,459, dated September 10, 1:901. Application tiled August 4, 1900. Serial No. 25,854. (No model.)

To Cl/ZZ whom it may concern.-

Be it known that I, ALBERT J. DEMMLER, a resident of Wellsville, in the county of Columbiana and State of Ohio, have invented a new and useful Improvement in Annealing- Boxes; and I do hereby declare the following to be a full, clear, and exact description thereof.

Myinvention relates to annealing-boxes for heating or annealing sheet metal, its object being to provide a suitable annealing-box in which smaller piles or bodies of sheets may be heated or annealed while practically the same tonnage can be heated in the furnace or annealing oven and the separate piles may be handled separately, such as for transporting to the rolls, and each pile may be protected from contact with the atmosphere during handling, if desired.

The invention is specially applicable for use in connection with a method of forming polished sheet iron or steel set forth in an application filed by me of even date herewith, Serial No. 25,856.

It consists, generally stated, in a heating or annealing box formed of a series of sections stacked one upon the other, each section being formed of a pan and cover connected by suitably-luted joints, as hereinafter more fully set forth and claimed.

To enable others skilled in the art to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in which Figure 1 is a side View, partly broken away, of an annealing-box embodying the invention. Fig. 2 is a cross-section of the same. Fig. 3 is a plan of one end of an annealingbox section, showing the removable end flange and the Way of supporting the same. 4 and 5 show side and end views and the handling of the same by means of the overhead cranes or grapples.

The annealingbox can of course be arranged to be moved into or out of the heating or annealing furnace or oven in any suitable way, the drawings showing the same as provided wit-h the bed 2, supported upon the balls 3 and over which it is rolled into the furnace. Except that the bed which forms the bottom of the lower section of the box is provided with the ball-groove 4 the construction of each section of the box is the same, the box being shown with the three sections 5 6 7. I will therefore describe the parts of each section with the same figures where they correspond in parts. Each box has of course the bottom or pan, the bottoms or pans S of the upper sections of the stack having flat lower faces instead of being provided with ballgrooves 4. The pans have the side anges 9 and are preferably formed with the sand ribs 10 inside of the same, these sand ribs and sand flanges being only formed along the sides of the pans and not extending across the ends thereof, for the reason that where the sheets are fed directly from these beds or bottoms to the rolls it is necessary that the smooth upper faces of the bed should extend to the ends thereof without the interference of any flanges. To provide the necessary sand-'grooves at the ends of the sections, however, as shown particularly in Fig. 3, at the ends of the outer anges 9 I form the inwardly-projecting ribs 11, against which are placed the removable end lianges 12, which are formed of metal bars corresponding in height to the iianges 9 and resting on the top of the bed, and so forming between them and the end walls of the section-covers sand-grooves 13. The section-covers 14 are of practically the same shape as the ordinary annealingbox cover, except that they are made lower and have dat tops to receive and support the sections resting thereon. They are also provided with the trunnions 15, by which they can be handled by the grapples. Grapples employed for handling the sections either for the lifting of the covers therefrom or the lifting of the beds themselves and carrying them to the rolls can be of any suitable construction, the grapples 16 shown having the yoke 17 supporting the cross-bar 18, from which the trunnion-links 19 hang in position to engage with the trunnions of the section-covers, While the grapples have also the depending arms 20, provided with the inwardly-extending toes 21, which pass under the lower edges of the pans, and so provide for lifting and carrying the same to the rolls, hammers, or other places. It will be noticed that the lower pan 4 is oifset, as at 22, to provide means for engagement with the toes of the grapple.

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When the annealing-box is in use, the several section-s thereof may either be charged with piles of sheets or plates and then stacked the one above the other, or the stack may be built up on the bottom pan 2. After the sheets are placed upon each bed or pan the removable end flanges 12 are inserted in place and the section-cover 1 4 then lowered upon the same and the sand filled within the sand-groove 13, so luting or sealing the' section. The sections are then stacked one upon the other, the main point to be Watched being that the slide edges of the heated sheets shall be held even to prevent undue oxidation thereof when subsequently exposed for rolling. The box is then put into the heating' or annealing furnace or oven and is raised to the necessary heat and maintained at the same as found proper for treatment of the sheets, and atltheproper heat or tempera'tur'e the box is withdrawn from the oven, after which the different sections of the box can be handledlas found most desirable, according to the treatmentto which the sheets are to' be subjected. For the forming of blue'd and polished sheetiron or steel each particular section of the box can be carried Whilethe cover is still held thereon to the rolls between which the sheets are to be rolled and the section-cover then removed from the same, the end flanges being preferably withdrawn before the section-cover is removed andthe sand-'lu-ti'ngbrushed off to prevent-possib'ilityV of contact of the sand with the sheets.

V- the' same heat.

If the plant is provided with a number ofv sets of' rolls, each box-section can be carried to one ofsuch sets and the entire charge of the annealinglbox be thus rolled at approximately During such rollingl the sec- `tion' pa`ns act as hot beds t'o-maintain the heat of the lower sheets of the pile.` If desired, the sect-ioncovers can be removed before the Sheets are transported to the rolls, and Where the-plant doesl not contain sufcient sets of rolls to roll all the sheets contained in the different sections at the same time the heat y the sheets as found best according to the Work to be performed and for the handling of the sheets in bulk by mechanical means Without the necessity of the employment of separate t supporting-slabs, While the cost and labor of handling the sheets are reduced to a minimum. The box can be used for'heating sheet metal of any kind.

What I claim as my invention, and desire to secure by Letters Patent, is Y 1. In an annealing-box, the combination of a -series of box-sections built one uponV the other, the bed for each -section havingrside flanges and removable end flanges, arsect-ioncover fitting within said flan-ges, and a lnted joint between the cover and flanges.I

2. In an annealing-box, the combinati-011 of a series of box-sections built one upon the other, the be'd for each section having side flanges formed therewith and Aprovided With inwardly-extending lips at their ends, and removable end flanges engaging with the inwardly-extending lips, a section-cover fitting Within said flanges, and a lntedjoi-nt between the cover and flanges. Y

An annealing-boxhavinga bed with side flanges and sand ribs formed integral therewith and extending longitudinally at or near the outer edges, but not across the ends of the bed, a cover fitting between said flanges and ribs, and a removable end flange extend.- ing across the ends of the pan and with the cover' forming the sand-groove. y y

In testimony whereof I, the said ALBERT J. DEMMLER, have hereunto set my hand..

ALBERT J. DEMMLER.

Vitnesses:

JAMES I. KAY, J. D. BUCKLEY. 

